import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'

Vue.use(VueRouter) 
const routes = [
  {
    path: '/',
    redirect: '/ogin'
  },
  {
    path: '/login',
    name: 'Login',
    component: Login
  },
  {
    path: '/home', 
    component: Home,
    redirect:'/welcome',
    children:[
       {path:'/welcome',component: Welcome},
       {path:'/users',component: Users},
       {path:'/rights',component: Rights},
       {path:'/roles',component: Roles},
       {path:'/categories',component: Cate},
       {path:'/params',component: Params},
       {path:'/goods',component: GoodsList},
       {path:'/goods/add',component:Add},
       {path:'/orders',component:Order}
      ]
  }
]

const router = new VueRouter({
  routes
})

// 挂载路由守卫
router.beforeEach((to, form, next) => {
    // to 将要访问的路径
    // from 代表从哪个路径跳转而来
    // next 是一个函数 表示放行
    //  next() 放行 next('/login') 强制跳转
    if(to.path === '/login') return next();

    // 获取token 
    const tokenStr = window.sessionStorage.getItem('token')
    if(!tokenStr) return next('/login') 
    next()
})
export default router
